Trolley-base.



No. 805,568. PATENTED NOV. 28, 1905 H. R. LOCKHART.

TROLLEY BASE.

APPLICATION FILED JULY 23.1904.

W W Mm,

HENRY ROLAND LOOKHART, OF WESTMOUNT, CANADA.

TROLLEY-BASE.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed July 23, 1904. Serial No. 217,816.

T 0 all 'whom it may concern:

Be it known that I, HENRY ROLAND LooK- HART, a citizen of the UnitedStates, residing at 111 Lewis avenue, in the town of Westmount, in theProvince of Quebec, Dominion of Canada, have invented a certain new anduseful Improvement in Trolley Bases, of which the following is aspecification.

My invention relates to electric railways operated through a trolley;and it has for its object to provide a base supporting the trolley poleadapted to permit movement in every direction and more particularly topermit the trolley-pole to swing on a bearing parallel to the roof ofthe car lengthwise, thereby providing a mechanism which holds thetrolley-wheel securely to the trolley-wire in all positions of the carand which prevents wear and tear on both trolley-wheel and trolley-wire,due to pressures on curves in the railway-line.

Reference is made to the annexed drawings, in which Figure 1 is the sideview of the trolley-base. Fig. 2 is a vertical section of Fig. 1, andFig. 3 is a vertical cross-section of Fig. 1.

The mechanism as shown consists of the socket A, secured to the car-roofB, and vertically pivoted in the socket A is the horizontal bearing C.Through the bearing C a rod D passes, provided with a fork D at one endand the nut D at the other end. A yoke E, into which the trolley-pole Fis secured, is journaled to the fork D. A sliding crosshead G travels onthe bar D. A pair of rods H connect the yoke E with the cross-head G,and a coil-spring I surrounds the rod D between the cross-head G and thebearing 0. With this construction the trolley-pole F can swing in avertical plane on a bearing in the yoke D and with the rod D can swingsidewise in the bearing 0, which bearing C itself can turn in the socketA, thus providing for the trolleypole F a universal bearing or jointupon the roof of the car B.

I am aware that the trolley-bases hitherto used and known have beenprovided with a vertical bearing and a horizontal bearing incombination; but my invention provides for an extension of the movementof the trolleypole by the addition of a second horizontal bearing atright angles to the bearing of the trolley-pole.

I do not limit my invention to the specific form of construction shownin the drawings, which disclose one form of the universal-joint support.

Having now described my invention, what I claim, and desire to secure byLetters Patent, is-

1. In a trolley-base, the combination of a trolley-pole socket, a bar, abearing vertically pivoted in the car-roof in which the said bar ishorizontally journaled, and pivotal connections between the socket andthe bar at right angles to the bearing as described.

2. In a trolley-base, the combination of a trolley-pole socket, a bar, abearing vertically pivoted in the car-roof in which the said bar ishorizontally j ournaled, pivotal connections between the socket and thebar at right angles to the bearing, and a tension device connecting thesocket and the bar as described.

3. A trolley-base comprising a socket se' cured to the car-roof, ahorizontal bearing vertically pivoted in the socket, atensionspring-carrying bar journaled in the horizontal bearing and atrolley-pole yoke horizontally pivoted to the bar at right angles to thevertically-pivoted bearing as described.

4. A trolley-base comprising a socket secured to the car-roof, ahorizontal bearing vertically pivoted in the socket, atensionspring-carrying bar ournaled in the horizontal bearing, atrolley-pole yoke horizontally pivoted to the bar at right angles to thevertically-pivoted bearing, a cross-head sliding on said bar and linkedto the trolley-pole yoke, and a tension-spring surrounding said barbetween the cross-head and the vertically-pivoted horizontal bearing asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY ROLAND LOCKHART.

Witnesses:

I. A. DAWSON, HANBURY A. B'UDDEN.

